It's going to largely depend on how your network is setup, but basically
when you define the subnets for scanning, you would exclude that subnet.
Ideally you would hope it's a /24 or smaller, but it may be a challenge if
the network is larger.
In our case we disabled WMI all together because it would randomly pop up
in multiple networks of ours and the other subnet scans would never
complete. We have a lot of network space, so I have our subnet scans
running back to back overnight almost every day.